package book;

public class BookList {
    private Book[] books = new Book[10];
    //表示当前书架上书的有效个数：
    private int usedSize;

    /*
    *当调用构造方法的时候，我们书架上预先存放三本书
    * */
    public BookList(){
        books[0] = new Book("三国演义","罗贯中",12,"小说");
        books[1] = new Book("西游记","吴承恩",24,"小说");
        books[2] = new Book("水浒传","施耐庵",17,"小说");
        usedSize = 3;

    }

    /*
    * 获取某个下标的书：
    * */
    public Book getBook(int pos){
        if(pos < 0){
            return null;
        }
        return books[pos];
    }

    public void setBooks(int pos,Book book){
        books[pos] = book;
    }

    public int getUsedSize(){
        return getUsedSize();
    }

    public void setUsedSize(int usedSize){
        this.usedSize = usedSize;
    }



}
